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Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory

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On Sun, 11 Nov 2012 22:35:55 -0800, markspace wrote:

> On 11/11/2012 9:50 PM, dy/dx wrote:
>> On Mon, 12 Nov 2012 00:40:18 -0500, dy/dx wrote:
>>
>>> I pngcrushed a problem png and the number of loads I could have without a
>>> crash went up from 3 to 5; pngcrush reported a 27% reduction in size.
>>> 5*0.73 = 3.65 so the bug enabling threshold was somewhere between 3*original
>>> size and 3.65*original size with that png.
>>
>> Bah. Late night. 4*0.73 = 2.92 (no crash) while it crashed at 3, so the
>> threshold was between 2.92*original size and 3*original size -- a pretty
>> narrow range. That file was about 10MB on disk before crushing and about
>> 7.3MB afterward, so between 29.2 and 30 megs of interlaced-or-32-bpp png
>> lies the triggering threshold, at least in my system's case. Again, that
>> might vary even on systems that have the bug: try replacing the individual
>> SoftReference variable initializers and println with something like List a
>> = new ArrayList(); for (int i = 0; i < 50; i++) { System.out.println("" +
>> i); a.add(ImageIO.read(f)); } and run it. If you get OOME, the bug isn't
>> happening for you; if Java just exits, it is.
>>
> 
> 
> Could you load the offending files on a photo sharing service?  I'd like 
> to check them out.

I already provided an exact recipe for creating a problem png: download the
24-megapixel image linked from

http://aerialphotographysandiego.com/samples-aerial-photography-san-diego.html

and use Photoshop to create a copy that is an interlaced png. (As long as
you don't /distribute/ the copy, it shouldn't be copyright infringement, as
private format-shifting of copyrighted content has been found legal. But
I'm not about to risk getting sued by uploading the results to imageshack
or wherever, and the other problem pngs I have are part of some
confidential work, so...)

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Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-11 23:36 -0500
  Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 00:40 -0500
    Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 00:50 -0500
      Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory markspace <-@.> - 2012-11-11 22:35 -0800
        Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 11:30 -0500
          Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Joerg Meier <joergmmeier@arcor.de> - 2012-11-12 18:20 +0100
            Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 12:26 -0500
              Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-11-12 15:53 -0800
                Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 19:52 -0500
                Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Knute Johnson <nospam@knutejohnson.com> - 2012-11-12 17:03 -0800
                Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 21:25 -0500
                Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Knute Johnson <nospam@knutejohnson.com> - 2012-11-12 19:25 -0800
                Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Robert Klemme <shortcutter@googlemail.com> - 2012-11-13 06:42 -0800
                Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-11-13 09:15 +0000
  Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Fredrik Jonson <fredrik@jonson.org> - 2012-11-12 09:37 +0000
    Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory Fredrik Jonson <fredrik@jonson.org> - 2012-11-12 09:47 +0000
    Re: Crash in Java 1.6.0_13 ImageIO PNG decoder (and possibly later versions) loading large interlaced PNGs with low memory dy/dx <dydx-1@gmail.invalid> - 2012-11-12 11:51 -0500

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